Power distribution module capable of being maintained without power failure and power distribution system

Abstract

The invention relates to the technical field of power supplies, and discloses a power distribution module capable of being maintained without power interruption and a power distribution system. The power distribution module comprises a cabinet, a commercial power horizontal bus unit, a power distribution bus unit, an input switch unit, an input connection unit, an output connection unit, an output switch unit, an output horizontal bus unit and a UPS unit, the cabinet comprises a framework and an isolation shell assembled on the framework, and the isolation shell is used for insulation and isolation; the periphery of the commercial power horizontal bus unit, the periphery of the power distribution bus unit, the periphery of the input switch unit, the periphery of the output switch unit and the periphery of the output horizontal bus unit are all provided with isolation shells. The isolation circuit is used for independently isolating the commercial power horizontal bus unit, the power distribution bus unit, the input switch unit, the output switch unit and the output horizontal bus unit. According to the power distribution module, the UPS unit can be overhauled or replaced without powering off the whole power distribution system.

Description

Technical Field

[0001] The present invention relates to the technical field of power supplies, and particularly relates to a power distribution module and a power distribution system that can be maintained without power interruption. Background Art

[0002] In the current prefabricated power module solution, it includes two parts: a low-voltage power distribution cabinet and an uninterruptible power supply (UPS). Among them, the UPS uninterruptible power supply, as an important component, is often used in combination with the UPS input and output switches. However, the input and output ends of the UPS input and output switches, the horizontal bus cable, and the power distribution bus cable are not isolated from each other, which has great limitations. When the UPS uninterruptible power supply fails, it is impossible to separately remove the UPS uninterruptible power supply for maintenance or replacement without power interruption in the power distribution system. In some usage scenarios, such as the power distribution systems of banks and important data centers, power outage is a very serious matter, and the resulting economic losses cannot be underestimated. Summary of the Invention

[0003] The present invention provides a power distribution module and a power distribution system that can be maintained without power interruption. The above power distribution module can perform maintenance or replacement on the UPS unit without powering off the entire power distribution system.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A power distribution module that can be maintained without power interruption, including a cabinet and a mains horizontal bus unit, a power distribution bus unit, an input switch unit, an input connection unit, an output connection unit, an output switch unit, an output horizontal bus unit, and a UPS unit that are installed in the cabinet and are modularly designed;

[0006] The cabinet includes a skeleton and an isolation housing assembled on the skeleton, and the isolation housing is used for insulation isolation;

[0007] The output end of the mains horizontal bus unit is connected to the input end of the power distribution bus unit, the output end of the power distribution bus unit is connected to the input end of the input switch unit, the output end of the input switch unit is connected to the input end of the input connection unit, the output end of the input connection unit is connected to the input end of the UPS unit, the input end of the output connection unit is connected to the output end of the UPS unit, the output end of the output connection unit is connected to the input end of the output switch unit, the output end of the output switch unit is connected to the input end of the output horizontal bus unit, and the input switch unit and the output switch unit can control the power-on and power-off of the power distribution module;

[0008] Wherein, isolation housings are provided around the mains horizontal bus unit, the distribution bus unit, the input switch unit, the output switch unit, and the output horizontal bus unit, for separately isolating the mains horizontal bus unit, the distribution bus unit, the input switch unit, the output switch unit, and the output horizontal bus unit.

[0009] Optionally, an isolation housing is provided around the UPS unit for separately isolating the UPS unit.

[0010] Optionally, the input end of the UPS unit includes a main input interface, a bypass input interface, and a DC input interface;

[0011] The input connection unit includes a main input connection unit, a bypass input connection unit, and a DC input connection unit;

[0012] The input end of the main input connection unit is connected to the output end of the input switch unit, and the output end of the main input connection unit is used to connect to the main input interface;

[0013] The input end of the bypass input connection unit is connected to the output end of the input switch unit, and the output end of the bypass input connection unit is used to connect to the bypass input interface;

[0014] The output end of the DC input connection unit is used to connect to the DC input interface, and the input end of the DC input connection unit is used to connect to a DC input cable.

[0015] Optionally, the input switch unit includes a main input switch unit and a bypass input switch unit;

[0016] The input end of the main input switch unit is connected to the output end of the distribution bus unit, and the output end of the main input switch unit is connected to the input end of the main input connection unit;

[0017] The input end of the bypass input switch unit is connected to the output end of the distribution bus unit, and the output end of the bypass input switch unit is connected to the input end of the bypass output connection unit;

[0018] Both the main input switch unit and the bypass input switch unit adopt a modular design, and isolation housings are provided around the main input switch unit and the bypass input switch unit for separately isolating the main input switch unit and the bypass input switch unit.

[0019] Optionally, it further includes a DC input switch unit installed in the cabinet;

[0020] The input end of the DC input switch unit is used to connect to a DC input cable, and the output end of the DC input switch unit is connected to the input end of the DC input connection unit;

[0021] The DC input switch unit adopts a modular design and is surrounded by the isolation housing for isolating the DC input switch unit separately.

[0022] Optionally, it further includes a grounding unit and a grounding bus unit installed in the cabinet;

[0023] The housing of the UPS unit is connected to the input end of the grounding bus unit through the grounding unit, and the skeleton, the mains power horizontal bus unit, the distribution bus unit, the input switch unit, the output switch unit, and the output horizontal bus unit are all connected to the input end of the grounding bus unit. The output end of the grounding bus unit is used to access the grounding grid of the power distribution system;

[0024] The grounding unit and the grounding bus unit adopt a modular design.

[0025] Optionally, the mains power horizontal bus unit, the distribution bus unit, the main path input connection unit, the bypass input connection unit, the DC input connection unit, the output connection unit, the output horizontal bus unit, the grounding unit, and the grounding bus unit are all copper busbars.

[0026] Optionally, the mains power horizontal bus unit and the output horizontal bus unit are segmented and have reserved expansion connection holes.

[0027] Optionally, it further includes a communication line channel unit and a monitoring unit installed in the cabinet;

[0028] The communication line channel unit is provided with laying channels for communication lines and communication control lines. The communication lines are used for signal connection between the monitoring unit and the UPS unit, and the communication control lines are used for parallel connection between power distribution modules;

[0029] The monitoring unit is signal-connected to the mains power horizontal bus unit, the distribution bus unit, the input switch unit, the UPS unit, the output switch unit, and the output horizontal bus unit;

[0030] The isolation housing is arranged around the communication line channel unit and around the monitoring unit for isolating the communication line channel unit and the monitoring unit separately.

[0031] Optionally, the cabinet includes a first assembly room and a second assembly room located on one side of the first assembly room along a first direction. The first assembly room includes a first sub-assembly room and a second sub-assembly room arranged side by side along a second direction;

[0032] The UPS unit is located in the first sub-assembly chamber. The input switch unit and the output switch unit are located in the second sub-assembly chamber and arranged along a first direction. The main path input connection unit, the bypass input connection unit, the DC input connection unit, and the output connection unit are located in the second sub-assembly chamber and are located on one side of the input switch unit and the output switch unit along a third direction. The first direction, the second direction, and the third direction are perpendicular to each other.

[0033] The utility power horizontal bus unit and the output horizontal bus unit are located in the second assembly chamber.

[0034] Optionally, the monitoring unit is located on a side of the main path input connection unit, the bypass input connection unit, the DC input connection unit, and the output connection unit that is away from the input switch unit and the output switch unit. A sealing plate for insulation isolation is provided between the monitoring unit and the main path input connection unit, the bypass input connection unit, the DC input connection unit, and the output connection unit.

[0035] Optionally, when no UPS unit is assembled, a detachable empty space baffle is provided in the first assembly chamber for reserving an empty space for the assembly of the UPS unit.

[0036] The present invention further provides a power distribution system, including at least two power distribution modules that can be maintained without power interruption provided in any one of the above technical solutions, and at least two of the power distribution modules that can be maintained without power interruption are connected in parallel.

[0037] In the power distribution module provided by the embodiment of the present invention, which can be maintained without power interruption, it includes a cabinet and a mains horizontal bus unit, a power distribution bus unit, an input switch unit, an input connection unit, an output connection unit, an output switch unit, and an output horizontal bus unit that are installed in the cabinet and are modularly designed. Among them, the cabinet may include a skeleton and an isolation housing assembled on the skeleton. Isolation housings are provided around the mains horizontal bus unit, around the power distribution bus unit, around the input switch unit, the output switch unit, and the output horizontal bus unit. Compared with the prior art, each unit in the mains horizontal bus unit, the power distribution bus unit, the input switch unit, the output switch unit, and the output horizontal bus unit can be isolated separately. When the UPS unit of a certain power distribution module in the power distribution system needs to be repaired or replaced, only the switches of the input switch unit and the output switch unit connected to the UPS unit need to be tripped to control the power-off of the corresponding power distribution module. Without touching the mains horizontal bus unit, the power distribution bus unit, and the input switch unit in the power distribution module, that is, in a safe situation, the UPS unit can be repaired or replaced without powering off the entire power distribution system, which can ensure the normal power supply of the power distribution system, without restricting the duration of repairing or replacing the UPS unit, and can avoid economic losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 FIG. is a schematic structural diagram of a power distribution module provided by an embodiment of the present invention that can be maintained without power interruption;

[0039] Figure 2 FIG. is a schematic structural diagram of another power distribution module provided by an embodiment of the present invention that can be maintained without power interruption;

[0040] Figure 3 FIG. is a schematic structural diagram of another power distribution module provided by an embodiment of the present invention that can be maintained without power interruption;

[0041] Figure 4 FIG. is a schematic structural diagram of another power distribution module provided by an embodiment of the present invention that can be maintained without power interruption;

[0042] Figure 5 FIG. is a schematic structural diagram of another power distribution module provided by an embodiment of the present invention that can be maintained without power interruption.

[0043] ICON:

[0044] 100 - Cabinet; 101 - Framework; 102 - Isolation housing; 1 - Mains power horizontal bus unit; 2 - Distribution bus unit; 3 - Main circuit input switch unit; 4 - Bypass input switch unit; 5 - Main circuit input connection unit; 6 - Bypass input connection unit; 7 - DC input connection unit; 8 - UPS unit; 9 - Output connection unit; 10 - Output switch unit; 11 - Output horizontal bus unit; 12 - Grounding unit; 13 - Grounding bus unit; 14 - Communication line channel unit; 15 - Monitoring unit; 16 - Sealing plate; 17 - Fastening piece; 18 - Empty space baffle; 19 - Communication line. Detailed implementation mode

[0045] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0046] Please refer to Figure 1 and Figure 2 , an uninterruptible maintenance power distribution module provided by an embodiment of the present invention includes a cabinet 100 and a mains power horizontal bus unit 1, a distribution bus unit 2, an input switch unit, an input connection unit, an output connection unit 9, an output switch unit 10, an output horizontal bus unit 11, and a UPS unit that are installed in the cabinet 100 and are modularly designed;

[0047] The cabinet 100 includes a framework 101 and an isolation housing 102 assembled on the framework 101, and the isolation housing 102 is used for insulation isolation;

[0048] The output end of the mains power horizontal bus unit 1 is connected to the input end of the distribution bus unit 2, the output end of the distribution bus unit 2 is connected to the input end of the input switch unit, the output end of the input switch unit is connected to the input end of the input connection unit, the output end of the input connection unit is connected to the input end of the UPS unit 8, the input end of the output connection unit 9 is connected to the output end of the UPS unit 8, the output end of the output connection unit 9 is connected to the input end of the output switch unit 10, the output end of the output switch unit 10 is connected to the input end of the output horizontal bus 11, and the input switch unit and the output switch unit 10 can control the power on and off of the power distribution module;

[0049] Among them, isolation cases 102 are provided around the mains power horizontal bus unit 1, around the distribution bus unit 2, around the input switch unit, around the output switch unit 10, and around the output horizontal bus unit 11, so as to isolate the mains power horizontal bus unit 1, the distribution bus unit 2, the input switch unit, the output switch unit 10, and the output horizontal bus unit 11 separately.

[0050] In the power distribution module capable of being maintained without power interruption provided by the embodiment of the present invention, it includes a cabinet 100 and a mains power horizontal bus unit 1, a distribution bus unit 2, an input switch unit, an input connection unit, an output connection unit 9, an output switch unit 10, and an output horizontal bus unit 11 which are installed in the cabinet 100 and are modularly designed. Among them, the cabinet 100 may include a framework 101 and an isolation case 102 assembled on the framework 101. Isolation cases 102 are provided around the mains power horizontal bus unit 1, around the distribution bus unit 2, around the input switch unit, around the output switch unit 10, and around the output horizontal bus unit 11. Compared with the prior art, each unit in the mains power horizontal bus unit 1, the distribution bus unit 2, the input switch unit, the output switch unit 10, and the output horizontal bus unit 11 can be isolated separately. When the UPS unit 8 of a certain power distribution module in the power distribution system needs to be overhauled or replaced, only the switches of the input switch unit and the output switch unit 10 connected to the UPS unit 8 need to be tripped to control the power-off of the corresponding power distribution module. Without touching the mains power horizontal bus unit 1, the distribution bus unit 2, and the input switch unit in the power distribution module, that is, in a safe situation, the UPS unit 8 can be overhauled or replaced without powering off the entire power distribution system, which can ensure the normal supply of power in the power distribution system, without restricting the duration of overhauling or replacing the UPS unit 8, and can avoid economic losses.

[0051] In the power distribution module capable of being maintained without power interruption provided in this embodiment, an isolation case 102 may be provided around the UPS unit 8 to isolate the UPS unit 8 separately. This power distribution module can combine the existing low-voltage distribution cabinet and the uninterruptible power supply (UPS) into one distribution cabinet, which can optimize the connection structure of the distribution cabinet, facilitate assembly before the distribution cabinet leaves the factory, and be transported to the data center site by a forklift or a crane, improving the construction efficiency of the power distribution system at the data center site. Moreover, when the UPS needs to be overhauled or replaced, it can ensure the personal safety of the staff, and can power off the entire power distribution system without interruption, ensuring the normal supply of the power system.

[0052] Specifically, the input end of the above-mentioned UPS unit 8 may have a main path input interface, a bypass input interface, and a DC input interface; as Figure 2As shown in the figure, the input connection unit may include a main path input connection unit 5, a bypass input connection unit 6, and a DC input connection unit 7. Among them, the input end of the main path input connection unit 5 may be connected to the output end of the input switch unit, and the output end of the main path input connection unit 5 is used to be connected to the main path input interface; the input end of the bypass input connection unit 6 is connected to the output end of the input switch unit, and the output end of the bypass input connection unit 6 is used to be connected to the bypass input interface to realize the connection between the UPS unit 8 and the input connection unit; while the output end of the DC input connection unit 7 is used to be connected to the DC input interface, and the input end of the DC input connection unit 7 is used to be connected to the DC input cable to realize the connection between the UPS unit 8 and the DC input connection unit 7.

[0053] Specifically, the above input switch unit may be a module; or, as Figure 1 and Figure 3 shown in the figure, the input switch unit may also be divided into a main path input switch unit 3 and a bypass input switch unit 4, that is, divided into two modules. For example, the input end of the main path input switch unit 3 is connected to the output end of the power distribution bus unit 2, and the output end of the main path input switch unit 3 is connected to the input end of the main path input connection unit 5 to realize the connection between the input switch unit and the main path input connection unit 5; the input end of the bypass input switch unit 4 is connected to the output end of the power distribution bus unit 2, and the output end of the bypass input switch unit 4 is connected to the input end of the bypass output connection unit 9 to realize the connection between the input switch unit and the bypass input connection unit 6. Among them, both the main path input switch unit 3 and the bypass input switch unit 4 may adopt a modular design, and isolation housings 102 are provided around both the main path input switch unit 3 and the bypass input switch unit 4 to separately isolate both the main path input switch unit 3 and the bypass input switch unit 4. When overhauling or replacing the UPS unit 8, the safety of the maintenance personnel can be guaranteed, and it is not necessary to cut off the power supply of the entire power distribution system, and the normal supply of the power system can be guaranteed.

[0054] In practical applications, during the setup of the above-mentioned power distribution module at the data center site, a separate switch needs to be set outside the power distribution module between the DC input cable and the DC input connection unit 7. When it is necessary to repair or replace the UPS unit 8, the switch also needs to be tripped. To improve the assembly efficiency of the power distribution system, in the power distribution module provided in this embodiment, a DC input switch unit installed in the cabinet 100 can also be included; the input end of the DC input switch unit is used to connect to the DC input cable, and the output end of the DC input switch unit is connected to the input end of the DC input connection unit 7; the DC input switch unit adopts a modular design and is surrounded by an isolation housing 102 for isolating the DC input switch unit separately. It can directly set the DC input switch unit in the power distribution module and can be assembled before leaving the factory. When assembling the power distribution system at the data center site, there is no need to separately set a switch between the DC input cable and the DC input connection unit 7, which can improve the on-site construction efficiency of the power distribution system; moreover, when it is necessary to repair or replace the UPS unit 8, the DC input switch unit, the main circuit input switch unit 3, and the bypass input switch unit 4 can be evenly tripped and disconnected, which can ensure the safety of maintenance personnel and does not require the entire power distribution system to be powered off, ensuring the normal supply of the power system.

[0055] In the power distribution module provided in this embodiment that can be maintained without power interruption, as Figure 1 and Figure 2 shown, it also includes a grounding unit 12 and a grounding bus unit 13 installed in the cabinet 100; the casing of the UPS unit 8 is connected to the input end of the grounding bus unit 13 through the grounding unit 12, and the skeleton 101, the mains horizontal bus unit 1, the power distribution bus unit 2, the input switch unit, the output switch unit 10, and the output horizontal bus unit 11 are all connected to the input end of the grounding bus unit 13. The output end of the grounding bus unit 13 is used to access the grounding network of the power distribution system, enabling the grounding of the power distribution module; among them, the grounding unit 12 and the grounding bus unit 13 adopt a modular design, and the grounding bus unit 13 can be integrally set in the power distribution cabinet. The grounding bus unit 13 can be assembled in the power distribution cabinet before leaving the factory, facilitating the construction of the on-site power distribution system in the data center and being conducive to improving the on-site construction efficiency of the power distribution system.

[0056] In the power distribution module that can be maintained without power interruption provided in this embodiment, the above-mentioned mains horizontal bus unit 1, power distribution bus unit 2, main path input connection unit 5, bypass input connection unit 6, DC input connection unit 7, output connection unit 9, output horizontal bus unit 11, grounding unit 12, and grounding bus unit can all be copper bar buses. Connecting two units in the power distribution module by using copper bar buses instead of cables can simplify the connection structure, facilitate modular design, and make it convenient for assembling or disassembling each unit in the power distribution module. Specifically, the ends of two copper bar buses can be connected by screws, with a simple structure and convenient disassembly and assembly. Among them, the main path input connection unit, bypass input connection unit, and output connection unit connected to the UPS unit all have two copper bar buses. The two copper bar buses in each connection unit can be connected by screws. When the UPS unit needs to be disassembled, the two connected copper bar buses can be disconnected, which is convenient for disassembly and does not require touching the main path input switch unit and bypass input switch unit, ensuring the safety of maintenance personnel and the normal power supply of the power distribution system without powering off the entire power distribution system.

[0057] Specifically, the input end of the above-mentioned mains horizontal bus unit 1 can be connected to the mains cable. Through the power distribution bus unit 2, the power can be distributed, and the output horizontal bus unit 11 can provide power for the rear-end load of the UPS unit 8.

[0058] Specifically, as Figure 1 shown, the above-mentioned mains horizontal bus unit 1 and output horizontal bus unit 11 can be segmented and have reserved expansion connection holes. Expansion connection holes can be reserved at both ends of the mains horizontal bus unit 1 and output horizontal bus unit 11 for use in parallel cabinets. Optionally, in the power distribution system, when multiple power distribution modules are installed together for parallel operation, or when the power distribution module is installed in the middle of other cabinets 100, the mains horizontal bus unit 1 and output horizontal bus unit 11 can also be in a way that runs through multiple or the entire row of cabinets 100, and there is no need for segmented horizontal buses.

[0059] In the power distribution module that can be maintained without power interruption provided in this embodiment, as Figure 2 , Figure 4 and Figure 5As shown in the figure, it further includes a communication line channel unit 14 and a monitoring unit 15 installed in the cabinet 100; among them, the communication line channel unit 14 is provided with a laying channel for the communication line 19 and the communication control line. The communication line 19 can be used for signal connection between the monitoring unit 15 and the UPS unit 8, and the communication control line can be used for parallel connection between the power distribution modules; the monitoring unit 15 can be signal-connected to the mains horizontal bus unit 1, the power distribution bus unit 2, the input switch unit, the UPS unit 8, the output switch unit 10, and the output horizontal bus unit 11 to collect various parameter values on the mains horizontal bus unit 1, the power distribution bus unit 2, the input switch unit, the UPS unit 8, the output switch unit 10, and the output horizontal bus unit 11; the monitoring unit 15 can convert and process the collected data such as voltage parameters, current parameters, and temperature parameters, and upload them to the monitoring system of the computer room through the communication module. Among them, isolation shells 102 are arranged around the communication line channel unit 14 and around the monitoring unit 15 to separately isolate the communication line channel unit 14 and the monitoring unit 15, so that the communication line channel unit 14 and the monitoring unit 15 can be repaired under the condition that the power distribution system is not powered off.

[0060] Specifically, the above-mentioned cabinet 100 may include a first assembly room and a second assembly room located on one side of the first assembly room along a first direction. The first assembly room includes a first sub-assembly room and a second sub-assembly room arranged side by side along a second direction; among them, the UPS unit 8 may be located in the first sub-assembly room, the input switch unit and the output switch unit 10 are located in the second sub-assembly room and arranged along the first direction, and the main circuit input connection unit 5, the bypass input connection unit 6, the DC input connection unit 7, and the output connection unit 9 are located in the second sub-assembly room and on one side of the input switch unit and the output switch unit 10 along a third direction. The first direction, the second direction, and the third direction are perpendicular to each other; the mains horizontal bus unit 1 and the output horizontal bus unit 11 may be located in the second assembly room, which can reasonably arrange the structure of the power distribution modules.

[0061] Among them, the positions of the first assembly room and the second assembly room can be interchanged, and the positions of the first sub-assembly room and the second sub-assembly room can be interchanged. For example, the first assembly room can be located above the second assembly room, or it can also be located below the second assembly room. The first sub-assembly room is located on the left or right side of the second sub-assembly room, which is not limited here and is set according to the actual situation.

[0062] Specifically, as Figure 2 and Figure 4As shown, the above monitoring unit 15 can be located on the side of the main road input connection unit 5, bypass input connection unit 6, DC input connection unit 7, and output connection unit 9 that is away from the input switch unit and output switch unit 10. A sealing plate 16 for insulation isolation can be provided between the monitoring unit 15 and the main road input connection unit 5, bypass input connection unit 6, DC input connection unit 7, and output connection unit 9. The sealing plate 16 can be detachably connected to the skeleton 101 by screws. When overhauling the monitoring unit 15, due to the effect of the sealing plate 16, maintenance personnel can be prevented from touching the busbar structures of the main road input connection unit 5, bypass input connection unit 6, DC input connection unit 7, and output connection unit 9. Only by powering off the monitoring unit 15 can the monitoring unit 15 be overhauled or replaced. Among them, the sealing plate 16 can be a single piece or composed of multiple pieces spliced together, which is not limited here and depends on the actual situation. Specifically, the isolation housing 102 and the sealing plate 16 can have heat dissipation holes to facilitate the heat dissipation of the components in the cabinet 100.

[0063] In practical applications, both sides of the second assembly room of the cabinet 100 in the third direction are provided with isolatable shells 102 that can be opened, which can be used as the front door and the back door. The UPS unit 8 is assembled on the skeleton 101 in the first sub-assembly room through the fixing member 17. The input switch unit can include a main road input switch unit 3 and a bypass input switch unit 4. The main road input switch unit 3, bypass input switch unit 4, and output switch unit 10 can be assembled in the second sub-assembly room arranged in the first direction. The main road input connection unit 5, bypass input connection unit 6, DC input connection unit 7, output connection unit 9, grounding unit 12, and grounding bus unit 13 are located in the second sub-chamber and on the side of the input switch unit and output switch unit 10 near the back door. The monitoring unit 15 is located in the second sub-chamber and fixed to the inner side of the back door. A sealing plate 16 is provided between the monitoring unit 15 and the main road input connection unit 5, bypass input connection unit 6, DC input connection unit 7, output connection unit 9, grounding unit 12, and grounding bus unit 13.

[0064] In the above application solution, when overhauling or replacing the UPS components without powering off the power distribution system, the following operation process can be adopted:

[0065] The UPS unit 8 shuts down, the output switch unit 10 switches off, the main circuit input switch unit 3 switches off, the bypass input switch unit 4 switches off, and the switch connected to the input end of the DC input connection unit 7 switches off; Open the rear door of the cabinet 100, use tools to remove the fixed screws of the seal, and remove it from the skeleton 101; Use tools to remove the fixed screws at both ends of the main circuit input connection unit 5, bypass input connection unit 6, DC input connection unit 7, output connection unit 9, and grounding unit 12, and remove the main circuit input connection unit 5, bypass input connection unit 6, DC input connection unit 7, output connection unit 9, and grounding unit 12 from the power distribution module; Open the front and rear doors at the UPS unit 8, use tools to remove the fixing parts 17 of the UPS unit 8; Pull out the connection plug between the communication line channel and the UPS unit 8; Push the UPS unit 8 from the back of the cabinet 100 forward (or, push the UPS unit 8 from the front of the cabinet 100 backward) to remove it from the power distribution module. After the maintenance is completed or a new UPS unit 8 arrives, operate in the reverse steps to install the UPS unit 8 into the power distribution module, that is, complete the operation of uninterruptible maintenance or replacement of the unit. Since the mains horizontal bus unit 1, power distribution bus unit 2, input switch unit, output switch unit 10, and output horizontal bus unit 11 are all separately isolated by the isolation housing 102, it can ensure the personal safety of the staff and enable the maintenance or replacement operation of the UPS unit 8 to be carried out with the power distribution system remaining powered on.

[0066] In addition, in the above application solution, when the power distribution system is powered on, the maintenance of the monitoring unit 15 can be specifically operated as follows: The monitoring unit 15 is installed on the rear door of the power distribution module. Just open the rear door of the power distribution module to safely check the monitoring unit 15. If any device abnormality is found, pull out the fuse tube in the monitoring unit 15 to cut off the power supply of the monitoring unit 15 for further maintenance or replacement, which is convenient, fast, and does not affect the power supply of the power distribution system.

[0067] The power distribution module provided in this embodiment can also be used as a power distribution cabinet for early deployment and on-demand expansion, which can improve the rapid response efficiency of the power distribution system. That is, the UPS unit 8 is used as an optional component. When the power distribution module is not assembled with the UPS unit 8, as Figure 3 and Figure 4 shown, a detachable empty position baffle 18 can be set in the first assembly room to reserve an empty position for the assembly of the UPS unit 8, which has the functions of maintaining the unity of the device appearance and protecting and blocking. When expansion is needed, remove the empty position baffle 18 and install the UPS unit 8. During this process, the system can keep the power distribution system powered on, thus realizing rapid deployment.

[0068] In practical applications, the above-mentioned distribution bus unit 2 can also be arranged in the second sub-assembly room, and its specific position can be determined according to the actual situation. The communication line channel unit 14 can be arranged in the first assembly room, and its specific position is determined according to the actual situation. The incoming line of the DC input cable can enter from any side of the second sub-assembly room, and there is no limitation here, which is determined according to the actual situation. The installation position of the grounding bus unit 13 can also be determined according to the actual situation, and there is no limitation here. The position of the monitoring unit 15 can also be set on the front door, inside the cabinet, or outside the cabinet, and there is no limitation here, which is determined according to the actual situation.

[0069] The present invention also provides a power distribution system, which includes at least two power distribution modules that can be maintained without power interruption provided in any of the above technical solutions, and the at least two power distribution modules that can be maintained without power interruption are connected in parallel.

[0070] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A power distribution module that can be maintained without power interruption, characterized in that, it includes a cabinet and a mains horizontal bus unit, a distribution bus unit, an input switch unit, an input connection unit, an output connection unit, an output switch unit, an output horizontal bus unit, and a UPS unit that are installed in the cabinet and are modularly designed; the cabinet includes a skeleton and an isolation housing assembled on the skeleton, and the isolation housing is used for insulation isolation; the output end of the mains horizontal bus unit is connected to the input end of the distribution bus unit, the output end of the distribution bus unit is connected to the input end of the input switch unit, the output end of the input switch unit is connected to the input end of the input connection unit, the output end of the input connection unit is connected to the input end of the UPS unit, the input end of the output connection unit is connected to the output end of the UPS unit, the output end of the output connection unit is connected to the input end of the output switch unit, the output end of the output switch unit is connected to the input end of the output horizontal bus unit, and the input switch unit and the output switch unit can control the power on and off of the power distribution module; wherein, isolation housings are provided around the mains horizontal bus unit, the distribution bus unit, the input switch unit, the output switch unit, and the output horizontal bus unit to separately isolate the mains horizontal bus unit, the distribution bus unit, the input switch unit, the output switch unit, and the output horizontal bus unit.

2. The power distribution module according to claim 1, characterized in that, an isolation housing is provided around the UPS unit to separately isolate the UPS unit.

3. The power distribution module according to claim 2, characterized in that, the input end of the UPS unit includes a main path input interface, a bypass input interface, and a DC input interface; the input connection unit includes a main path input connection unit, a bypass input connection unit, and a DC input connection unit; the input end of the main path input connection unit is connected to the output end of the input switch unit, and the output end of the main path input connection unit is used to be connected to the main path input interface; the input end of the bypass input connection unit is connected to the output end of the input switch unit, and the output end of the bypass input connection unit is used to be connected to the bypass input interface; the output end of the DC input connection unit is used to be connected to the DC input interface, and the input end of the DC input connection unit is used to be connected to a DC input cable.

4. The power distribution module according to claim 3, characterized in that, the input switch unit includes a main path input switch unit and a bypass input switch unit; the input end of the main path input switch unit is connected to the output end of the distribution bus unit, and the output end of the main path input switch unit is connected to the input end of the main path input connection unit; the input end of the bypass input switch unit is connected to the output end of the distribution bus unit, and the output end of the bypass input switch unit is connected to the input end of the bypass output connection unit; Both the main path input switch unit and the bypass path input switch unit adopt modular design, and isolation housings are provided around the main path input switch unit and around the bypass path input switch unit to separately isolate the main path input switch unit and the bypass path input switch unit.

5. The power distribution module according to claim 3, wherein, it further includes a DC input switch unit installed in the cabinet; The input end of the DC input switch unit is used to connect to a DC input cable, and the output end of the DC input switch unit is connected to the input end of the DC input connection unit; The DC input switch unit adopts modular design and an isolation housing is provided around it to separately isolate the DC input switch unit.

6. The power distribution module according to claim 4, wherein, it further includes a grounding unit and a grounding bus unit installed in the cabinet; The casing of the UPS unit is connected to the input end of the grounding bus unit through the grounding unit, and the framework, the mains horizontal bus unit, the power distribution bus unit, the input switch unit, the output switch unit, and the output horizontal bus unit are all connected to the input end of the grounding bus unit. The output end of the grounding bus unit is used to access the grounding network of the power distribution system; The grounding unit and the grounding bus unit adopt modular design.

7. The power distribution module according to claim 6, wherein, the mains horizontal bus unit, the power distribution bus unit, the main path input connection unit, the bypass path input connection unit, the DC input connection unit, the output connection unit, the output horizontal bus unit, the grounding unit, and the grounding bus unit are all copper bar buses.

8. The power distribution module according to claim 7, wherein, the mains horizontal bus unit and the output horizontal bus unit are in a segmented form and have reserved expansion connection holes.

9. The power distribution module according to any one of claims 6 - 8, wherein, it further includes a communication line channel unit and a monitoring unit installed in the cabinet; The communication line channel unit is provided with laying channels for communication lines and communication control lines. The communication lines are used for signal connection between the monitoring unit and the UPS unit, and the communication control lines are used for parallel connection wiring between power distribution modules; The monitoring unit is signal - connected to the mains horizontal bus unit, the power distribution bus unit, the input switch unit, the UPS unit, the output switch unit, and the output horizontal bus unit; Isolation housings are provided around the communication line channel unit and around the monitoring unit to separately isolate the communication line channel unit and the monitoring unit.

10. The power distribution module according to claim 9, wherein, the cabinet includes a first assembly room and a second assembly room located on one side of the first assembly room along a first direction. The first assembly room includes a first sub - assembly room and a second sub - assembly room arranged side by side along a second direction; The UPS unit is located in the first sub-assembly room. The input switch unit and the output switch unit are located in the second sub-assembly room and arranged along a first direction. The main path input connection unit, the bypass input connection unit, the DC input connection unit, and the output connection unit are located in the second sub-assembly room and are on one side of the input switch unit and the output switch unit along a third direction. The first direction, the second direction, and the third direction are perpendicular to each other. The mains horizontal bus unit and the output horizontal bus unit are located in the second assembly room.

11. The power distribution module according to claim 10, characterized in that the monitoring unit is located on the side of the main path input connection unit, the bypass input connection unit, the DC input connection unit, and the output connection unit that is away from the input switch unit and the output switch unit. There is a sealing plate for insulation isolation between the monitoring unit and the main path input connection unit, the bypass input connection unit, the DC input connection unit, and the output connection unit.

12. The power distribution module according to claim 11, characterized in that when the UPS unit is not assembled, a detachable empty position baffle is arranged in the first assembly room for reserving an empty position for the assembly of the UPS unit.

13. A power distribution system, characterized in that it includes at least two power distribution modules that can be maintained without power interruption as described in any one of claims 1-12, and at least two of the power distribution modules that can be maintained without power interruption are connected in parallel.

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